{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-76858 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-76858 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-76858 is a medium-severity cross-site scripting vulnerability in Netcore NR255-V, published on 15 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-76858 and fix it if it is affected.\n\nWhat it is: CVE-2026-76858 is a medium-severity cross-site scripting vulnerability in Netcore NR255-V, published on 15 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-76858 in the wild and no public exploit code.\n\nAffected product: Netcore NR255-V. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-76858/ (Markdown: https://insights.sbomify.com/CVE-2026-76858/index.md)","id":"CVE-2026-76858","markdown":"https://insights.sbomify.com/CVE-2026-76858/index.md","name":"CVE-2026-76858","record":{"aliases":["GHSA-wjhw-7xcr-gr58"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Netcore router","requires_auth":"high_privilege","summary":"Attackers can inject persistent scripts via DDNS configuration in Netcore NR255-V routers, leading to code execution when the page is viewed.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":4.8,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Netcore NR255-V version 1.5.130703 contains a stored cross-site scripting vulnerability in ddns_wan_list_show.cgi caused by unsafe eval() handling of DDNS data. Attackers can inject malicious script through the DDNS configuration path, leading to persistent execution when the affected page is viewed.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Netcore NR255-V 1.5.130703 Stored Cross-Site Scripting via DDNS eval() in ddns_wan_list_show.cgi","id":"CVE-2026-76858","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Netcore NR255-V 1.5.130703 Sensitive Information Disclosure via user_pass_show.cgi","id":"CVE-2026-76859"},"packages":[],"prev":{"headline":"Netcore NR255-V 1.5.130703 Plaintext DDNS Credential Disclosure via ddns_wan_list_show.cgi","id":"CVE-2026-76857"},"products":["NR255-V"],"published":"2026-09-15","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-16","vendors":["Netcore"]},"summary":"Attackers can inject persistent scripts via DDNS configuration in Netcore NR255-V routers, leading to code execution when the page is viewed.","url":"https://insights.sbomify.com/CVE-2026-76858/"}